Axell Wirless OMU-II User manual. Detail about the OMU and How to connect the BSF Repeater with them....
AXELL OPTICAL MASTER UNIT MARK II
PRODUCT DESCRIPTION AND USER’S MANUAL
Optical Master Unit Mark II Product Description and User’s Manual Doc PN 00018UM Rev. 1.9 THIS DOCUMENT IS VALID FOR ALL OMU MARK II MODELS
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AXELL OPTICAL MASTER UNIT MARK II
PRODUCT DESCRIPTION AND USER’S MANUAL
Copyright © 2013 Axell Wireless Ltd All rights reserved. No part of this document may be copied, distributed, transmitted, transcribed, stored in a retrieval system, or translated into any human or computer language without the prior written permission of Axell Wireless Ltd. The manufacturer has made every effort to ensure that the instructions contained in this document are adequate and free of errors and omissions. The manufacturer will, if necessary, explain issues which may not be covered by this document. The manufacturer's liability for any errors in the document is limited to the correction of errors and the aforementioned advisory services. This document has been prepared to be used by professional and properly trained personnel, and the customer assumes full responsibility when using them. The manufacturer welcomes customer comments as part of the process of continual development and improvement of the documentation in the best way possible from the user's viewpoint. Please submit your comments to the nearest Axell Wireless sales representative.
Contact Information Headquarters
Axell Wireless Aerial House Asheridge Road Chesham Buckinghamshire HP5 2QD United Kingdom Tel: +44 1494 777000 Fax: +44 1494 777002
Commercial inquiries Web site Support issues Technical Support Line, English speaking
[email protected] www.axellwireless.com
[email protected]
+44 1494 777 747
Contact information for Axell Wireless offices in other countries can be found on our web site, www.axellwireless.com
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AXELL OPTICAL MASTER UNIT MARK II
PRODUCT DESCRIPTION AND USER’S MANUAL
About This Manual This Product Manual provides the following information: • Description of the OMU Unit •
Procedures for setup, configuration and checking the proper operation of the unit
•
Maintenance and troubleshooting procedures
For whom it is Intended This Product Manual is intended for experienced technicians and engineers. It is assumed that the customers installing, operating, and maintaining Axell Wireless Remotes are familiar with the basic functionality of Remotes.
Notice Confidential - Authorized Customer Use This document may be used in its complete form only and is solely for the use of Axell Wireless employees and authorized Axell Wireless channels or customers. The material herein is proprietary to Axell Wireless. Any unauthorized reproduction, use or disclosure of any part thereof is strictly prohibited. All trademarks and registered trademarks are the property of their respective owners.
Disclaimer of Liability Contents herein are current as of the date of publication. Axell Wireless reserves the right to change the contents without prior notice. The information furnished by Axell Wireless in this document is believed to be accurate and reliable. However, Axell Wireless assumes no responsibility for its use. In no event shall Axell Wireless be liable for any damage resulting from loss of data, loss of use, or loss of profits and Axell Wireless further disclaims any and all liability for indirect, incidental, special, consequential or other similes damages. This disclaimer of liability applies to all products, publications and services during and after the warranty period.
Safety Instructions and Warnings Throughout this manual, important safety warnings and admonishments are included to warn of possible hazards to persons or equipment. A safety warning identifies a possible hazard and then describes what may happen if the hazard is not avoided. The safety warnings – in the form of Dangers, Warnings and Cautions must be followed at all times. These warnings are flagged by the use of a warning icon, usually the triangular alert icon seen below. The exclamation point within the triangular alert icon is intended to warn the operator or service personnel of operation and maintenance from factors relating to the product and its operating environment, which could pose a safety hazard.
Exclusive Remedies The remedies provided herein are the Buyer’s sole and exclusive remedies. Axell Wireless shall not be viable for any direct, incidental, or consequential damages, whether based on contract, tort, or any legal theory.
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References References to standards apply as relevant to the remote type being connected to the OMU II. Please see respective remote manual for details.
Guarantees All antennas must be installed with lightning protection. Damage to power modules, as a result of lightning are not covered by the warranty.
General Safety Warnings Concerning Use of This System Always observe standard safety precautions during installation, operation and maintenance of this product. Throughout this manual, there are "Caution" warnings. "Caution" calls attention to a procedure or practice, which, if ignored, may result in injury or damage to the system, system component or even the user. Do not perform any procedure preceded by a "Caution" until the described Caution labels! conditions are fully understood and met.
Danger: Electrical Shock
To prevent electrical shock when installing or modifying the system power wiring, disconnect the wiring at the power source before working with un insulated wires or terminals. RF radiation, (especially at UHF frequencies) arising from transmitter outputs connected to AWL’s equipment, must be considered a safety hazard. This condition might only occur in the event of cable disconnection, or because a ‘spare’ output has been left un-terminated. Either of these conditions would impair the system’s efficiency. No investigation should be carried out until all RF power sources have been removed. This would always be a wise precaution, despite the severe mismatch between the impedance of an N type connector at 50Ω, and that of free space at 377 Ω, which would severely compromise the efficient radiation of RF power. Radio frequency burns could also be a hazard, if any RF power carrying components were to be carelessly touched!
Caution: RF Exposure
Antenna positions should be chosen to comply with requirements (both local & statutory) regarding exposure of personnel to RF radiation. When connected to an antenna, the unit is capable of producing RF field strengths, which may exceed guideline safe values especially if used with antennas having appreciable gain. In this regard the use of directional antennas with backscreens and a strict site rule that personnel must remain behind the screen while the RF power is on, is strongly recommended. Where the equipment is used near power lines or in association with temporary masts not having lightning protection, the use of a safety earth connected to the case-earthing bolt is strongly advised.
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PRODUCT DESCRIPTION AND USER’S MANUAL
Caution: Safety to personnel.
•
Before installing or replacing any of the equipment, the entire manual should be read and understood.
•
The user needs to supply the appropriate AC or DC power to the equipment. Incorrect power settings can cause damage to the equipment and cause injury to the user. Please be aware that the equipment may, during certain conditions become very warm and can cause minor injuries if handled without any protection, such as gloves All servicing must be carried out by certified servicing engineers.
•
•
•
Caution: Safety to equipment
•
•
Attention: Electrostatic Sensitivity
Caution: Class 1 Laser
© Axell Wireless Ltd
When installing, replacing or using this product, observe all safety precautions during handling and operation. Failure to comply with the following general safety precautions and with specific precautions described elsewhere in this manual violates the safety standards of the design, manufacture, and intended use of this product. Axell Wireless assumes no liability for the customer's failure to comply with these precautions. This entire manual should be read and understood before operating or maintaining the remote. All servicing must be carried out by certified servicing engineers.
Observe electrostatic precautionary procedures. ESD = Electrostatic Discharge Sensitive Device. Semiconductor transmitters and receivers provide highly reliable performance when operated in conformity with their intended design. However, a semiconductor may be damaged by an electrostatic discharge inadvertently imposed by careless handling. Static electricity can be conducted to the semiconductor chip from the centre pin of the RF input connector, and through the AC connector pins. When unpacking and otherwise handling the remote, follow ESD precautionary procedures including use of grounded wrist straps, grounded workbench surfaces, and grounded floor mats. Equipment described in this manual are equipped with class 1 lasers, as per definition in EN 60825-1 Caution - Un-terminated optical receptacles may emit laser radiation. Exercise caution as follows: • Do not stare into beam or view with optical instruments. Optical transmitters in the fibre optic converter can send out high energy invisible laser radiation. There is a risk for permanent damage to the eye. •
Always use protective cover on all cables and connectors which are not connected.
•
Never look directly into a fibre cable or a connector.
•
Consider that a fibre can carry transmission in both directions.
•
During handling of laser cables or connections, ensure that the source is switched off.
•
Regard all open connectors with respect and direct them in a safe direction and never towards a reflecting surface. Reflected laser radiation should be regarded as equally hazardous as direct radiation.
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Table of Contents 1
Introduction ................................................................................................................. 1 1.1 Features ................................................................................................................................ 2 1.2 Architecture .......................................................................................................................... 3 1.3 OMU II Models and Ordering Information .......................................................................... 4 1.4 Point-of-Interface (POI) ........................................................................................................ 5 1.5 Supported Combinations of High-powered and Low-powered Units ............................. 5 1.5.1 OMU II Topology with 24 MBF-20 Remotes ............................................................. 6 1.5.2 OMU II Topology with Eight High-Power Remotes ................................................... 6 1.6 OMU II Front Panel Modules ............................................................................................... 7 1.6.1 WDM Fibre Optic Converter ...................................................................................... 7 1.6.2 Optic Splitter .............................................................................................................. 8 1.6.3 RF Splitter and RF Combiner Modules ..................................................................... 8 1.6.4 Control Module .......................................................................................................... 9 1.6.5 External Alarm and Battery Module........................................................................... 9 1.6.6 Modem Unit ............................................................................................................... 9 1.6.7 Modem Antenna ...................................................................................................... 10 1.6.8 Rack Communication Board .................................................................................... 10 1.7 OMU Rear Panel Power and RF Interfaces ...................................................................... 11 1.7.1 Rear Panel for One or Two Service Connections ................................................... 11
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Installation ................................................................................................................. 12 2.1 Installation Overview ......................................................................................................... 12 2.2 Unpacking ........................................................................................................................... 12 2.3 Mounting in Rack ............................................................................................................... 12 2.4 Grounding – GND LUG ...................................................................................................... 13 2.5 RF Connections – Single Sector ....................................................................................... 14 2.6 Fibre Optic Connections ................................................................................................... 14 2.7 External Alarm and Relay Connections ........................................................................... 16 2.8 Modem Connections .......................................................................................................... 16 2.8.1 GPRS Modem SIM Card Installation ....................................................................... 17 2.8.2 Wireless Modem Antenna Connections .................................................................. 17 2.8.3 PSTN Modem .......................................................................................................... 17 2.9 Power Connections ............................................................................................................ 18 2.9.1 Power Cable Connections for Single/Dual Sector Rear Panel ............................... 18 2.9.2 Power Up ................................................................................................................. 19 2.10 RF Splitter/Combiner Installation ..................................................................................... 19
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OMU Commissioning Procedure ............................................................................. 20 3.1 Initiate Local Web Session ................................................................................................ 20 3.1.1 Supported Browsers ................................................................................................ 20 3.1.2 Opening a Local Web Session to the OMU II ......................................................... 20 3.1.3 Opening a Local USB Session to the OMU II ......................................................... 23 3.1.4 Login to the OMU II ................................................................................................. 24 3.2 Navigating the Web Interface ............................................................................................ 25 3.2.1 Management Options Buttons ................................................................................. 25 3.2.2 Home Pane View ..................................................................................................... 26 3.2.3 Configuration Options .............................................................................................. 27 3.3 Commissioning Steps Overview ...................................................................................... 28 3.4 Configuring General Parameters ...................................................................................... 29 3.4.1 Site Information - OMU II Identification ................................................................... 29
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PRODUCT DESCRIPTION AND USER’S MANUAL 3.4.2 Date & Time............................................................................................................. 30 3.4.3 Configure External Alarms ...................................................................................... 30 3.4.4 IP Address ............................................................................................................... 31 3.5 Remote Communication Setup ......................................................................................... 32 3.5.1 TCP/IP and Ethernet ............................................................................................... 32 3.5.2 Modem Setup .......................................................................................................... 33 3.6 For Installations WITHOUT POI – RF Signal Level Limitation ....................................... 35 3.6.1 Calculating the Downlink Path Attenuation ............................................................. 35 3.6.2 Setting the Attenuation ............................................................................................ 36 3.6.3 Noise Considerations .............................................................................................. 37 3.7 Optical Loss Adjustment (OLA) Per Link ........................................................................ 37 3.8 RF Balancing ...................................................................................................................... 39 3.8.1 Manual RF Balancing .............................................................................................. 39 3.8.2 Automatic Remote RF Balancing ............................................................................ 42
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Setup and Commissioning of Remote Fibre-Fed Units ..........................................43 4.1 Overview ............................................................................................................................. 43 4.2 Connect to Remote ............................................................................................................ 43
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Administration ...........................................................................................................45 5.1 User Accounts .................................................................................................................... 45 5.1.1 Default User Accounts ............................................................................................. 45 5.1.2 User Access Levels ................................................................................................. 45 5.1.3 Change Password ................................................................................................... 46 5.2 Reboot ................................................................................................................................. 46 5.3 Axell Shell (Command Line Interface) ............................................................................. 47 5.4 Attribute Reference ............................................................................................................ 48 5.5 System Monitoring ............................................................................................................. 49 5.5.1 Module Status Monitoring ........................................................................................ 49 5.5.2 Logs ......................................................................................................................... 51 5.5.3 SNMP Support......................................................................................................... 52
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Troubleshooting ........................................................................................................54 6.1 Troubleshooting Remote Communication ...................................................................... 54 6.2 Module LEDs....................................................................................................................... 60 6.2.1 WDM Module LEDs ................................................................................................. 60 6.2.2 Control Module LEDs .............................................................................................. 61 6.2.3 GSM Modem Behaviour .......................................................................................... 62
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OMU II Configurations...............................................................................................63 7.1 OMU II and MBF-20 Remotes ............................................................................................ 64 7.1.1 Single Sector 24 MBF-20 Remotes with POI .......................................................... 64 7.1.2 Single Sector 24 MBF-20 Remotes with Internal Splitter / Combiner ..................... 66 7.1.3 Dual Sector 24 MBF-20 Remotes with Internal Splitter / Combiners ...................... 68 7.2 OMU I Replacement ........................................................................................................... 70 7.2.1 OMU I Replacement – Single Sector, Six High Power Remotes ............................ 70 7.2.2 OMU II – schematic for OMU I replacement to support 1 Sector x 6 FO ................ 71 7.3 Single Sector – Eight High Power Remotes .................................................................... 72 7.3.1 Physical Configuration ............................................................................................. 72 7.3.2 Schematic ................................................................................................................ 73 7.4 Two-Sectors – Eight High Power Remotes Split Evenly per Sector ............................. 74 7.4.1 Physical Configuration ............................................................................................. 74 7.4.2 Schematic ................................................................................................................ 75 7.5 Two-Sectors – Eight High Power Remotes Split Unevenly Between Sectors ............. 76
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PRODUCT DESCRIPTION AND USER’S MANUAL 7.5.1 Physical Configuration ............................................................................................. 76 7.5.2 Schematic ................................................................................................................ 77 7.6 OMU II USA Solutions – with External POI ...................................................................... 78 7.6.1 POI Single Sector –8 MBF-40 Remotes.................................................................. 78 7.6.2 OMU II USA POI Solutions ...................................................................................... 80 7.6.3 External POI for OMU II with 8 MBF-40 Remotes in a single sector ...................... 81
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Maintenance .............................................................................................................. 82 8.1 General ................................................................................................................................ 82 8.2 Preventive Maintenance .................................................................................................... 82 8.3 Product Disposal ................................................................................................................ 82
Appendix A - Specifications ............................................................................................ 83 Appendix B – Connections with Duplex Filter ............................................................... 84 Appendix C - F/O Cleaning Procedure ........................................................................... 85 Cleaning Procedure ......................................................................................................... 86 Dry Cleaning ............................................................................................................................... 86 Wet Cleaning .............................................................................................................................. 88
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1 Introduction Axell OMU II is a scalable, flexible and remotely manageable fibre-to-optic conversion system designed to provide media conversion and single source management capabilities for Axell highpower and low-power fibre-fed Remote units. OMU II is a head-end system that acquires the RF signal(s) from an external source, such as base station(s) or an off-air device, and converts the RF signal into light signals for routing via optical fibres to remote Axell devices. Depending on the model and the physical configuration, OMU II can support up to eight sectors (where support for more than two sectors requires the use of Axell’s Point Of Interface (POI) unit in conjunction with the OMU II). OMU II can provide single source remote Web access commissioning and monitoring via a range of remote modems or an Ethernet connection, where the hosted remote units are be monitored and managed via an OMU II session.
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1.1 Features •
Wideband frequency range support - supports Cellular 2G, 3G, 4G services up to 2700MHz and public safety services FM/VHF/UHF/LMR in one enclosure
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Supported Remote units – MBF-20 (low power), MBF-40 and BSF-3604 (high power)
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Modular, scalable, highly customizable system
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Flexible configuration to support up to 8 sectors via single chassis as well as MIMO and SISO installations
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Single enclosure to support high power (MBF-40/BSF-3604) and low power (MBF-20) remote units: o Up to 24 MBF-20 remote units connected to a single OMU II unit o Up to 8 high-power remote units (MBF-40 or BSF) connected to a single OMU II unit o Various combinations of both high-power and low-power remote units as detailed in section 1.5 WDM technology (Wavelength Division Multiplexing) – single fibre connection to each Remote unit
•
•
Automatic Optical Loss Adjustment – system initiated pilot tones sent between the OMU II and each of its remote units are used to automatically determine the fibre loss and perform the necessary adjustment for each link
•
One or two (for redundancy) power-supplies (115-240V AC operation or DC 48V)
•
Management and control options: o Hosted fibre-optic remote units are managed and controlled via the OMU II (through fibre communication) o Auto detect of connected Remote units o Local setup via Ethernet (or via USB port) o Ethernet or wireless modem connection (optional) for remote management o A range of supported modems including: GSM, WCDMA, CDMA 1x, PSTN o SNMP v1/v2c support
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1.2 Architecture OMU II comprises of a chassis in which various modules are installed and whose rear panel varies (model dependent) to support one RF sector, two RF sectors or up to eight RF sectors (the latter requires the use of a POI unit). OMU II main function is to perform the RF to optic conversion from the RF source and route the optic signal over the optical fibres towards fibre-fed Axell remotes. Two main types of remotes are supported: high-power and low-power. Each optic conversion module provides power to a single high-power remote, where up to 8 optic conversion modules are supported. To support low-powered fibre-fed remotes, an optic splitter module is used to split the optical signal from one converter into four, feeding four low-powered fibre-fed remote units. Thus, various combinations of supported remote units can be achieved, within the given limitations. The valid combination of both high-power and low-power remotes per OMU II is detailed in section 1.5. Below is a general example of an OMU II configuration fed by a single sector (BTS) and a combination of high power (e.g. MBF-40, BSF-3604) and low power (MBF-20) remote fibre-fed units.
Figure 1-1. Overview of OMU II Architecture
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PRODUCT DESCRIPTION AND USER’S MANUAL The following figure illustrates one high-powered and four low-power remote connections to the opto-board and optic splitter board.
Figure 1-2. Optic Converter Connections
1.3 OMU II Models and Ordering Information OMU II is available in a range of models corresponding to remote products and customer needs.
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1.4 Point-of-Interface (POI) The POI unit is used with specific OMU II models whose rear panel is designed for interface with the POI. This type of installation provides user customizable configurations of up to eight sectors that can be routed to user selectable optical conversion units. The POI front panel provides the interfaces for up to eight RF sectors, whereas the rear panel allows the user to associate each sector to any of the OMU II optical conversion modules.
1.5 Supported Combinations of High-powered and Low-powered Units The following table demonstrates the available remote combination in a single OMU system. Note that the extreme options are for only high-power remotes - up to eight are supported; only low-power remotes - up to 24 are supported. In addition, the available combinations of both types of units. # of MBF-40 / BSF-3604
# of MBF-20
8
0
7
4
6
8
5
12
4
16
3
16
2
20
1
20
0
24 Figure 1-3. Remote Combination Table
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1.5.1 OMU II Topology with 24 MBF-20 Remotes Illustrated below is an example of a configuration supporting up to 24 MBF-20 units.
Figure 1-4. Example of an OMU with the maximum supported number of MBF-20 Remotes
1.5.2 OMU II Topology with Eight High-Power Remotes The following figure illustrates an installation with several sectors (up to eight) – each with a dedicated connection via the POI unit to the OMU II. The POI adjusts the power level of each services to 10dBm and routes it to one or more (according to manual configuration on the unit) optic converter units.
Figure 1-5. Example of an OMU and POI for multi-sector support
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1.6 OMU II Front Panel Modules OMU II chassis is designed for a 19” rack. It houses a number of different modules where the types of modules must be inserted in specific slots. For reference, the slots in the image below are numbered from left to right. Each of the modules is described in detail in the following sections. The OMU II has 12 connector slots configured, where specific types of modules must be inserted in the relevant slots.
Figure 1-6. Axell OMU Front Panel Interfaces
1.6.1 WDM Fibre Optic Converter Caution!!! Un-terminated optical receptacles may emit laser radiation. Do not stare into beam or view with optical instruments. Caution: Class 1 Laser
Location: see Figure 1-6. Provides WDM (single fibre) RF to optical signal conversion. •
Interfaces via the fibre (SC/APC port) to one of the following: o One high-power fibre-fed remote or o To an Optic Splitter module for feeding four low power fibre-fed remotes.
•
Six LED indicators: power status, error, (2) data communication and (2) optic signals. See section 6.2.1 for more details.
PWR ERR UL DATA DL DATA OPTO Rx OPTO Tx
Optic port SC/APC
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1.6.2 Optic Splitter Location: see Figure 1-6. Splits an optic signal from the connected WDM fibre-optic converter to four F/O signals used to feed four MBF-20 units Towards four MBF-20 remotes
To Fibre Optic Converter port
IN/OUT
1.6.3 RF Splitter and RF Combiner Modules Location: see Figure 1-6. UL in
RF out
DL out
Each pair of modules supports interface to one RF service. Depending on whether the ports are shorted, the service(s) can be connected from the front (or rear of the chassis). • Combine and distribute the RF signals between the OMU’s RF port and up to six Fibre Optic modules. •
Allows for Front Panel connection to RF source (e.g BTS).
•
Contains attenuators used to set the master signal levels in the downlink and uplink.
RF in
Note: By default, the module ports are interconnected (UL In to RF out) to allow RF connections at the rear of the unit. However, these may be disconnected to allow RF connections at the front of the unit for tests or troubleshooting.
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1.6.4 Control Module Location: see Figure 1-6. Modem Status
Modem Power
Login
Status
Provides control and management connections. These include local Ethernet (and USB) management Web management and a modem. Manages and controls the OMU and transmits alarms to the control centre.
LMT Port
•
Includes a Real Time Clock (RTC) with a dedicated backup battery.
•
Status LEDS: o Modem Status o Modem Power o Status o Login
.... .... .
Ethernet
1.6.5 External Alarm and Battery Module Location: see Figure 1-6.
PWR
•
Supports connections for four dry-contact external alarms and an alarm relay (output alarm).
•
ON/Off switch – can switch On/Off rechargeable battery pack. When on, allows the modem to transmit an alarm in case input power loss is detected. Switch for ON/OFF.
•
LED - Power
Battery Power On Off
1.6.6 Modem Unit Location: see Figure 1-6. •
Optional – if a modem is not available on the Control unit. For example, PSTN modems or wireless modems with a form factor that prevents it from being integrated with the Control Module.
•
The access to a PSTN modem is via an RJ11 connector on the front of the module.
PWR
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1.6.7 Modem Antenna Location: see Figure 1-6. •
Always relevant if a modem (except for PSTN modem) is installed – either as an integrated part of the Control module or as a dedicated module.
•
Provides the connection to an external (modem) antenna
Modem ANT
To external antenna
1.6.8 Rack Communication Board Location: see Figure 1-6. •
Provides two functions: o Allows communication between the Optic Converters and the Control Module.
•
LEDs indicate communication status between Control Module and F/O converters
PWR ERR UL DATA DL DATA Link OK
IN OUT 1 OUT 2
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1.7 OMU Rear Panel Power and RF Interfaces The OMU II rear-panel provides interface to the: •
RF source connections
•
Power supply connections
Two main types of rear panels are available: •
Model supporting one or two service connections
•
Model supporting up to eight service connections via POI interface
1.7.1 Rear Panel for One or Two Service Connections The rear panel is protected by a removable plate with openings for routing the power cables and for accessing the OMU N-type RF connections. The rear panel may vary according to the number of supported sectors. The following figure illustrates the rear panel supplied for a single sector with simplex RF connections.
Removable rear panel
Routed Power Cables
RF connections
Figure 1-7. Example of OMU II Rear Panel Interfaces – Single Sector Simplex Connections
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2 Installation 2.1 Installation Overview To get the system up and running, the following steps are required: 1. Unpack the equipment and verify all ordered items have been delivered and in operational condition. 2. Mount the OMU in a 19” rack (see 2.3). 3. Ground the unit (2.4) 4. Connect rear panel RF connections in the back panel (see 2.5) 5. Connect rear panel power cables (see 2.9.1) 6. Connect all F/O connections (2.6) 7. For GPRS modem communication, insert SIM card in Control module (see 2.8.1) 8. System setup and commissioning using the Web-GUI (see Chapter 0).
2.2 Unpacking Inspect the shipped material before unpacking the equipment, document any visual damage and report according to routines. A delivery of an OMU from Axell Wireless contains: •
Checklist with delivered items
•
OMU II Chassis with modules according to order
2.3 Mounting in Rack The OMU is designed to be mounted in a 19” rack. Follow the standard procedure on mounting equipment in a 19” rack. NOTE: A fibre guide unit can be mounted above the OMU to support the fibres as they are run from the front of the OMU to the back side of the rack..
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2.4 Grounding – GND LUG Note the following: •
Ensure that good grounding protection measures are taken to create a reliable OMU site. Make sure to use adequately dimensioned grounding cables.
•
The antenna cabling should be connected to ground every 10m by a reliable grounding kit.
•
Make sure the grounding product used is suitable for the kind and size of cable being used.
•
Connect the OMU ground bolt to the same ground.
To ground the OMU II Remove the rear panel. Attach the GND lug to the screws securing the bracket via which the POWER cables are routed (adjacent to the RF connectors). Route the GND cable along with the power cable through the bracket . Re-assemble the rear panel, fitting the RF connectors and routing the power and GND cables (green and yellow) through the openings.
GND wire routed via rear panel openings GND connection inside the rear panel
Figure 2-1. OMU II GND Connection
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2.5 RF Connections – Single Sector The connector for the uplink and the downlink connector are N-type and placed on the OMU rear panel. The OMU is connected to the BTS (or the remote) via a directional coupler (illustrated below). The coupler is connected in series with the BTS antenna. BTS signal source
e.g. -40dB
UL Duplexer
DL
Directional Coupler
10dBm
Antenna
Figure 2-2. Example of Single Sector RF Connection Directly to the BTS
2.6 Fibre Optic Connections This product is equipped with Class 1 lasers, as per definition in EN 60825-1.
CAUTION: Class 1 Laser
ATTEENTION!
Un-terminated optical receptacles may emit laser radiation. Do not stare into beam or view with optical instruments. •
Angled connectors, APC, need to be used throughout the whole link between the OMU and the remotes. The angle needs to be 8 degrees.
•
APC connectors are coloured Green. Non APC connectors are Blue and unsuitable for use. Do not mate APC and Non-APC connectors!
•
All Optical connectors must be carefully cleaned prior to mating. A dirty connector, once inserted, will contaminate the Fibre Optic connector inside the module which will then become unserviceable until it too is cleaned. Fibre Optic modules cannot be dismantled for cleaning in the field. Cleaning of dirty fibre optic connectors is not covered by Warranty. Fibre optic cleaning methods are detailed in Appendix C - F/O Cleaning Procedure.
Note the following: •
The fibre connectors on the Fibre Optic Converters are SC/APC type.
•
The fibre cables may be connected towards the remote units either directly or via an optical distribution panel.
•
Connect the optic fibres according to standard angle and cleaning requirements.
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PRODUCT DESCRIPTION AND USER’S MANUAL Connecting the F/O Cables 1. If connecting towards a high-powered remote (e.g. MBF-40, NBF 3604), connect it directly to an Opto-module. 2. If connecting towards a low-power remote (e.g. MBF-20): o o
Connect the Optic Module port to the BOTTOM port on the Optic Splitter module. Connect the low power remote towards the optic Splitter/Combiner.
To four MBF-20 remotes
To one high-power remote Interconnect for MBF-20 connections to Optic Splitter Figure 2-3. F/O Connections
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2.7 External Alarm and Relay Connections Four external alarm sources can be connected to the External Alarm and Battery Module via the patch panels as follows: •
Sources must generate a voltage between 12 and 24VDC (the presence or absence of this voltage will trigger the alarm depending on how the alarm thresholds have been configured).
•
Can supply +15V to an external alarm sources with a maximum allowed load of 100mA.
•
Maximum current through the relay is 100mA - can be configured to trigger on any number of internal and/or external alarms.
The panels can be used for wires of up to 0.5mm2. To connect a wire, press the yellow lever with a pen or other pointed item, insert the wire and release the lever.
PWR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Battery Power On Off
1 2 3 4 5 6
GND GND External alarm 1A External alarm 1B External alarm 2A External alarm 2B
7 8 9 10 11
Relay Output 1A Relay Output 1B +15VDC Output GND GND
12 13 14 15
External alarm 3A External alarm 3B External alarm 4A External alarm 4B
Figure 2-4. External Alarm and Battery Module with pin out for external alarms and relay
2.8 Modem Connections Note the following: •
The modem may be installed as an integrated part of the Control module or as an independent module. Both configurations require modem antenna installation.
•
GPRS modems require the installation of a SIM card.
•
Two types of modems are available – Wireless (GPRS, CDMA etc.) or PSTN.
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2.8.1 GPRS Modem SIM Card Installation Insert the SIM card in the Control module SIM slot. Modem Status
Modem Power
Login
Status
LMT Port
.... .... .
Ethernet
2.8.2 Wireless Modem Antenna Connections The Modem ANT module supports an external antenna connection via SMA connector. Insert this module at the rightmost slot in the OMU.
Modem ANT
To external antenna
2.8.3 PSTN Modem If the OMU is equipped with a PSTN modem the connector is placed in the Modem Unit. The connector is RJ11. Connect the modem module to a landline outlet (using an RJ11 cable).
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2.9 Power Connections 2.9.1 Power Cable Connections for Single/Dual Sector Rear Panel The OMU power supplies are placed in the rear, behind the back cover. Connect to Power power cables Supplies
RF Connectors
Rear panel
Power Cables GND cables
Connecting the Power Cables 1. Remove the rear panel by unscrewing the six screws.
2. Connect the supplied power cable(s) to one or both power supplies according to your physical configuration. 3. Replace the rear panel such that the power cable(s) (and GND cable) run through the openings on the right (adjacent to the RF connections).
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2.9.2 Power Up Note: If two power supplies are installed, connect them both. 1. Connect power cables to the power source to switch on the OMU. CAUTION! Make sure the RF cables or 50 ohm terminations are connected to the OMU RF port connectors before the OMU is switched on. 2. Switch the battery ON. The battery charges continuously and remains available until needed. If it is switched off it is not in any way operational.
PWR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Battery on/off
Battery Power On Off
2.10 RF Splitter/Combiner Installation NOTE: Splitter/Combiners are used with OMU II models supporting either one or two sectors. OMU II models supporting up to eight sectors are used in conjunction with POI (Splitters/Combiners are not installed in these models). See Chapter 7 OMU II Configurations for examples. Each Splitter/Combiner pair supports: •
One sector (i.e. two pairs of Splitter/Combiner units are installed for two sectors).
•
A maximum of six WDM Optical Conversion units (two pairs of Splitters/Combiners are required in configurations supporting eight WDM Optical Conversion Units)
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3 OMU Commissioning Procedure To commission the OMU II, connect to the unit locally and perform a few basic configuration procedures according to the instructions in this section.
3.1 Initiate Local Web Session NOTE: OMU II is supplied with default IP address 192.168.1.253 and netmask 255.255.255.0. You can open a local Web session to the OMU II using one of the following methods: •
A local Ethernet connection to the OMU II using an Ethernet cross-cable – requires configuring your computer to run in the same subnet as the default OMU II IP address.
•
A USB connection using the supplied USB cable – requires loading the USB driver from the supplied Setup disk.
3.1.1 Supported Browsers Notes: Java Script must be enabled in order for the Web-GUI to work. Browser Requirements: o o o o o
Mozilla Firefox 3 or later Google Chrome 11 or later Apple Safari 5 or later Opera 10 or later Internet Explorer 9 or later (Explorer 8 is not compatible – the Web GUI may not be accessed properly using Explorer 8)
3.1.2 Opening a Local Web Session to the OMU II 3.1.2.1 Connect the OMU II to computer Interconnect the computer and the OMU II front panel Ethernet ports with the supplied cable as shown below.
Ethernet cross-cable Figure 5. Local Ethernet Connection
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PRODUCT DESCRIPTION AND USER’S MANUAL 3.1.2.2 Configure the Computer Network Parameters Configure the computer network parameters to communicate with the OMU II. Note that the procedure may vary slightly depending on the operating system installed on your computer. The following procedure is for Windows 7. To configure the computer’s network parameters: 1. Click the Start menu and choose Control Panel. 2. In the Control Panel, click Network and Internet. 3. Click Network and Sharing Centre and then click Local Area Connection. The Local Area Connections Status dialog appears with the General tab displayed by default.
Figure 6. Local PC Network Information 4. Click the Properties button. The Networking tab appears.
Figure 7. Local PC Network Information 2
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PRODUCT DESCRIPTION AND USER’S MANUAL 5. In the Items list, double-click the “Internet Protocol Version 4 (TCP*IPv4)” item. 6. The Internet Protocol Version 4 (TCP/IPv4) Properties dialog appears. Note: The OMU II is factory set with the default IP address 192.168.1.253.
7. Assign your computer an IP address in the same subnet, in order to communicate with the unit. o o o
In the IP address area: Enter the IP address 192.168.1.x, where ‘x’ can be any number between 2 and 250 inclusive. For example, (192.168.1.9) Define the subnet mask as shown (255.255.255.0)
Figure 8. PC IP Configuration o
Click OK. The computer communication parameters are now defined and you can open a session to the OMII.
3.1.2.3 Opening a Session to the ML 1. Enter the OMU II default IP address in the Web browser.
2. The OMU II login dialog will appear. 3. Login according to section 3.1.4
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3.1.3 Opening a Local USB Session to the OMU II NOTE: This procedure requires downloading the USB driver from the provided disk or preloading it to your computer from the network. For first time connection to the OMU II USB port and any of your computer’s USB ports: 1. Connect to OMU USB port on any of your computer’s USB ports. If this is a first time connection, your computer will require the appropriate driver to be installed. 2. If you are connected to the internet - a standard driver will be downloaded automatically. 3. If you are not connected to the internet: o o
Insert you setup disk in the drive. Guide the system to the driver Axell Controller USB driver.inf driver on the disk.
USB
4. Open the web browser and type "axell-ne" in the address bar.
5. Login according to section 3.1.4
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3.1.4 Login to the OMU II 1. After connecting to the OMU II (either via Web or USB), the Axell login dialog appears.
Figure 3-9. Login Screen 2.
Use the following username and password to login: o o
Username: axell Password: AxellPasswd
NOTE: It is highly recommended to change the default password according to section 5.1.3
The Web GUI Main Window appears. 3. Review the Web GUI Main window description and perform the required configuration procedures according to the following sections.
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3.2 Navigating the Web Interface The Web GUI window provides access to the management options of the OMU and each of its connected remotes. Several tabs (and sub-tabs) are available: Home, Nodes, Logs, etc., where the Home tab (illustrated below), is displayed by default. Home pane options
Remote Optical Loss and RF Adjust options
Management options buttons
Figure 3-10. Basic View
3.2.1 Management Options Buttons The following table briefly describes the main functions of each tab:
Tab
Description Provides a general status and alarm information for OMU II system and its corresponding Remote Nodes (Remotes). Switching to Advanced View will toggle a more detailed view of each Opto-module's status. Section 3.2.2. Lists the remote nodes connected to a selected OMU. Provides access to the configuration options of each remote. Section 4.2. List of recent operations. Section 5.5.2
Provides a range of OMU II configuration procedures such as communication, RF, Date and Time, Password, etc. Section 3.2.3 Logout of the system.
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3.2.2 Home Pane View The Home tab is used for general monitoring of the OMUII status and can be displayed in several views: •
Collapsed – minimized the panes in the home view
•
Basic – main status displays for a basic view
•
Advanced – provides more status information. Usually used for troubleshooting if faults are displayed in basic view.
In addition, the OLA – Optical Loss Adjustment provides access to the optical loss adjustment operation for all connected Remote links Remote Optical Loss and Remote RF Adjust options
Viewing options
Management options buttons
General Ext. Alarms
Remote Modules
Figure 3-11. Basic View The pane is divided into four basic areas: •
Controller – shows general information on the OMU II device such as identification and temperature level
•
External Alarms – shows status of external alarms and the defined names
•
Rack 1 to 4 – area displayed per rack (can be minimized). It includes two sub-area: o Point of Interface – shows status of input signal and used to provide attenuation options. For more information on RF configuration, refer to section 3.6. o Fibre Optics Modules – shows status on all Remote links and displays Remotes (according to index number) connected to the nodes. See section 4.2 for more information.
NOTE: If one of the system nodes reports an alarm, the Rack to which it is attached to, automatically expands to show the alarm status (blinking red LED) assisting troubleshooting.
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3.2.3 Configuration Options The configuration pane provides access to the OMU II configuration options. To access the configuration pane In the Main window, click on the Config menu option. The following pane appears.
Option
Description
Site Information
Configure and display OMU II identification information. See section 3.4.1
External Alarms
Used to activate and assign names to external alarms. See section 3.4.3
Change password
Used to update system login password for the logged-in user. See section 5.1.3
Date and Time
Used to configure the time stamp for dating OMU II events. See section 3.4.2.
Ethernet
Used to define the IP Address for remote access via Ethernet.
Remote Used to configure remote communication (modem and Ethernet) and SNMP Communication parameters. See section 3.5 Axell Shell
Command line used to communicate with the remote units. List of commands is found under Help. See section 5.3
Attribute Reference
Lists and describes available Axell Shell commands, detailed and explained. Section 5.4
Reboot controller
Soft restarts the OMU II device. See section 5.2
SNMP Agent
SNMP Agent configuration. See section 5.5.3
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3.3 Commissioning Steps Overview This section describes how to perform the basic setup procedures. NOTE: Remotes running Common Firmware ver. 2.0.0 are automatically detected. Remotes running Common Firmware ver. 1.x are automatically added but cannot be commissioned through the OMU II. Use the RMC or Terminal like view to commission these types of remotes (including Axell Shell). Setup the OMU II as follows: 1. Configuring general parameters. This includes: o o o
Assign a name TAG – section 3.4.1 Set Date & Time – section 3.4.2 If relevant, configure External Alarms and Relay – section 3.4.3
2. Setup remote connection parameters (Ethernet, modem, etc.). See section 3.5 3. Set UL/DL Attenuation. Section 3.6. 4. Verify all expected remote units are detected. 5. Perform OLA (Optical Loss Adjustment) for the connected fibre-fed remotes. See section 3.7.
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3.4 Configuring General Parameters 3.4.1 Site Information - OMU II Identification It is recommended to assign each OMU II a recognizable name that will identify the location, site name, etc. The Site Information button provides access to OMU II hardware and software version information. To set OMU II TAG 1. In the Home window, click the edit button next to Tag.
Lock name Edit Tag Figure 3-12. Set OMU TAG Name 2. Enter the Name (up to 30 characters), click OK and click Apply. To view OMU II Site Information Click the Config button and click on the Site Information icon. Two areas are displayed: •
Control Module – provides hardware and software version information.
•
Site Information – provides OMU II identification information.
Figure 3-13. OMU Site Information
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3.4.2 Date & Time Be sure to set the correct date and time in order to accurately timestamp all events occurring on the OMU II. To set the Date & Time: 1. Click the Config button. 2. Click on Date & Time. 3. Do one of the following: o o
Either, enter the correct date and time according to the displayed formats. Or, click on Local Time to set the time according to the PC running the Web-GUI.
4. Click Apply.
Set to local time
3.4.3 Configure External Alarms It is required to configure any connected external alarms according to the trigger (high or low) and it is recommended to assign the alarms recognizable names (such as Door Open, High Temperature, etc.) To configure the external alarms 1. In the Main menu, click the Config button. 2. Click on External Alarms. 3. For each alarm: o o
Set the Trigger as High or Low as required. Assign the alarm a recognizable description
4. Click Apply. Set High/Low
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Set Alarm Description
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3.4.4 IP Address This procedure describes how to set up the IP address either manually or configure for acquisition via DHCP. To configure the IP address 1. In the Main menu, click the Config button. 2. Click on Ethernet. 3. For manual IP address configuration: o o o
Select Manually Configure IP Address. Set the IP, Subnet Mask, Default Gateway and DNS addresses. Click Apply.
4. For DHCP IP address configuration: o o o
Select Automatically Obtain IP Address (DHCP). No other settings are required. Click Apply.
The Manual configuration settings are illustrated below.
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3.5 Remote Communication Setup This section describes the Ethernet and modem setup. The SNMP setup option also available in this dialog is described in section 5.5.3. SNMP . Select an option (ETH TCP, Modem or SNMP) and configure. Then select the next relevant option. NOTE: The configuration of each option is saved and active. It is not relevant which option is currently selected (ETH TCP, Modem or SNMP).
3.5.1 TCP/IP and Ethernet TCP/IP communication is run over a company’s network. Therefore, each company needs to define the details regarding the configuration, IP addresses, etc. TCP/IP Communication Setup 1. Click on the Config button. 2. From Device:Method select ETH:TCP (Ethernet:TCP/IP). 3. Click Apply.
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3.5.2 Modem Setup NOTE: This section is relevant only if a modem is installed in the OMU II system. If connecting directly via Ethernet, see section 3.5. The OMU II can operate over two types of modem: Packet Switched (GPRS, GSM etc.) or Circuit Switched (PSTN/GSM). The available options depend on the modem type installed in your OMU II system. Modem Setup Overview 1. Insert the SIM card in the Control module SIM slot (if using a wireless modem). 2. Click the Config button and then choose Modem from the displayed icons. The following dialog appears.
3. Verify that Remote Communication is ON. 4. Select the Device:Method – communication method. Only the options relevant to your installed modem will be displayed. (STD:DTC = Standard AT:Data Call, ETH:TCP = Ethernet:TCP connection) 5. Configure your communication method according to the relevant following section.
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PRODUCT DESCRIPTION AND USER’S MANUAL 3.5.2.1 Packet Switched Modem Configuration (GSM/GPRS) NOTE: In case network attach is not done properly (using GPRS), it is necessary to telnet, SSH or serial into the controller and enter TRACE MODEM to see why modem is not initialized (wrong / missing PIN, wrong APN etc). •
From the Remote communication menu, select TRM-3 GPRS.
•
In the GRPS area, enter the following: o Access Point Name – customer’s Access Point name. o Click Apply.
3.5.2.2 Circuit Switched Modem (PSTN/GSM) Using a circuit switched modem requires a landline connection be present at the site (for PSTN) or a SIM card supporting this feature (for wireless). Communication Setup 1. From Device:Method select STD:DTC (Stadnard AT:DataCall). 2. In the modem initialization string type: AT+CBST=7,0,1. 3. Click Apply.
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PRODUCT DESCRIPTION AND USER’S MANUAL Verify Circuit Switched Modem Functionality 1. Use the ACT RCD command via the Axell Shell or via Terminal to launch a modem restart (if logged in, restart will be performed on the first logout). 2. Dial the modem number (if PSTN) or the data number (if SIM card). 3. Verify modem LEDs are lit correctly (see 6.2). 4. Use any ACT command using the RMC or other Terminal to test connectivity and responsiveness. 3.5.2.3 SIM-card Using Single Numbering Scheme If using SNS (Single Numbering Scheme), calls to the modem within the network are automatically classified as DATA. However, if calling from outside the network, you must first verify how it’s interfaces handle the VOICE vs. DATA bearing. This cannot be solved at remote level. The external network administrator must provide the above information.
3.6 For Installations WITHOUT POI – RF Signal Level Limitation NOTE: This section is relevant ONLY for installations WITHOUT POI (i.e. with RF Splitter/Combiner modules). For installations with POI, verify the correct input voltage to the POI. The OMU has a master attenuation that can be set in downlink (DL) and uplink (UL) separately. This attenuation is useful for balancing the whole system. Note the following: •
Usually, only the DL attenuation is calculated and set.
•
The UL attenuation is then set equal to the DL and only adjusted to compensate for any noise.
To estimate the signal levels in the system, a link budget should be prepared before the system is made operational. This section provides background on calculating the required attenuation values along the link and describes how to set the attenuation value in the management application.
3.6.1 Calculating the Downlink Path Attenuation The following diagram illustrates the attenuation levels for a simplex RF connection. Note the following: •
Maximum input from BTS to OMU II = 23dBm (max)
•
Recommended composite power level to the Optical conversion modules ≤-3dBm (however, the module can support up to 10dBm)
•
Without attenuation (attenuator set to ‘0’), the DL loss = -14dB
•
Any additional required attenuation (up to -21dB) is implemented via the Variable Attenuator, where the goal is to acquire -3dBm at the Opto conversion unit (i.e. 11dBm after attenuation)
•
Therefore, measured value shown in GUI should be 11dBm – but not more than 14dBm.
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PRODUCT DESCRIPTION AND USER’S MANUAL Examples: RF Input = 11dBm, no additional attenuation is needed (11dBm – 14dB = -3dBm) RF Input = 20dBm, an attenuation of 9dB is needed. Set the attenuation according to section 3.6.2 Note: As the composite power in a multicarrier TETRA / TDMA / W-CDMA / LTE system is traffic dependent, the maximum laser input power must be calculated for the traffic scenario that will require highest composite power. Basic Explanation of Attenuation Levels for BS with SEPARATE Tx and Rx ports
OMU TX
BTS
Measured Power (11 to 14dBm)
up to - 21 dB
R X
Total attenuation = 44dB Recommended power = -3dBm
-14 dB
BTS Output
-30 dB
Variable Splitter Attenuator
BTS Input
-30 dB
Combiner
Loss in fiber cable e
Fibre-Fed Remote
o 10 Km up to -14 dB - 21 dB
Directional Couplers (x2)
3.6.2 Setting the Attenuation To set the attenuation 1. Click on the Home button. 2. Set the DL attenuation for each required OMU Rack according to the calculation in section 3.6.1. 3. Set the UL attenuation equal to the DL attenuation. If there is noise, adjust only the UL to reduce noise (section 3.6.3).
Set UL Attenuation equal to DL Set DL Attenuation
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3.6.3 Noise Considerations To reduce the noise degradation of the base station, it is recommended to reduce remote uplink gain only. The remote cells will in this case not be perfectly balanced, i.e. downlink can take higher path loss than uplink. In typical systems where you want to cover e.g. a road tunnel by tapping off a BTS nearby this small imbalance is less of a problem.
3.7 Optical Loss Adjustment (OLA) Per Link NOTE: The OLA should be performed at each system setup. It is also recommended to run this procedure each time a change in the optical equipment is performed. Each fibre optic link in the system will induce a loss. This loss will also differ in magnitude from one link to another since the distances between each remote and the OMU is different. The OMU II and its hosted remote units automatically calculate this loss and compensate for it on each link. This is accomplished through measurements of pilot tones of known levels sent between links and automatic level adjustments to compensate for any calculated losses. The adjustment is made towards a target value which means that the system will be balanced, i.e. all fibres will appear to have the same loss. The maximum compensation is 10dB which equals an unbroken fibre distance of 20 km. For each connection in the link (for instance at the ODF) approximately 0.5 dB of loss will have to be added. NOTE: For MBF-40 remotes, the maximum compensation is increased to 26dB to support shorter fibre optic distances. To initiate Optical Loss Adjustment 1. Click on the Home button and then the Opto Adjust button.
The following pane appears: Select nodes for UL/DL Adjustment Rack#:OptoModule F-DAS Remotes via Optic Splitter Figure 3-14. Configure and Initiate Optical Loss Adjustment
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PRODUCT DESCRIPTION AND USER’S MANUAL Column
Description
Pos
Each Rack corresponds to an OMU unit whereas each Slot corresponds to an Opto-Module. Slots are numbered according to their position in the OMU Chassis (numbered left to right).
Select All
Batch selection options: - mark all remotes for UL opto-adjustment. - mark all remotes for DL opto-adjustment. - mark all remotes for DL and UL adjustment.
Node
Node list number and identification (e.g. AHFK)
Status
Displays an Error if process failed. If successful the pilot tone used and the adjustment level will be displayed.
Resulting Attenuation
Compensation level used for the opto-module (in dB).
2. Mark the check-boxes corresponding to the remotes (each connected to the designated Optomodule/Opto-Splitter) to which to perform the adjustment. 3. OLA (DL/UL) may be performed on each node individually (or a batch) or on all nodes at once by marking the checkbox next to the desired corresponding Opto-module and clicking Adjust. To easily mark all checkboxes mark the checkbox named OLA. NOTE: The process may take several minutes depending on the size of the system and remote distance.
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3.8 RF Balancing The RF Balancing procedure can be performed manually (the automatic option specified in section 3.8.2 will be available in the future) via the OMU II web interface.
3.8.1 Manual RF Balancing The manual balancing procedure consists of the following steps: •
Verifying a DL RF output level of 23dBm by setting the required DL attenuation of the signal.
•
Setting the UL attenuation according to the DL.
•
In case of noise, adjusting the UL attenuation to reduce noise
To balance the remote UL and DL outputs 1. Access the remote Configuration window: o o
Click on the Nodes button. The below pane appears Click Control next to the node to be balanced.
2. The resulting pane can be displayed in two views: o o
Basic – default view (Basic button) Advanced – provides more information (Advanced button)
The dialog below shows an example of the Basic (default) view.
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General
Band information
UL setting
DL setting
Figure 3-15: Example of MBF 20 Quad Band Configuration window 3. The General area provides basic identification and status information and enables assigning an identifiable name: o
Received level – opto signal level at the MBF-20 (from the optic fibre)
o
Tag – identifiable name currently assigned to the unit. Click the icon to change the name. Model – unit type, frequencies ID – unique serial number associated with this unit (automatically assigned by AEM) Opto Loss Compensation – compensation allocated on the UL during the Optical Adjustment procedure
o o o
4. In the Downlink: o Verify the Amplifier for each band is ON. o Set Attenuation to maximum value (15dB). o Lower the Attenuation level step by step until the desired Output power level is reached. In this example +23 dBm. (Zero attenuation = maximum gain). o Verify the Amplifier Saturation is GREEN. 40
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5. In the Uplink: o Verify the Amplifier for each band is ON. o Set Attenuation equal to the value set in the DL (above). o Verify the Amplifier Saturation is GREEN.
NOTE: If noise is detected on the link, reduce only the Uplink for optimal signal.
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3.8.2 Automatic Remote RF Balancing NOTE: This feature will be available in future release. To access the Automatic RF Adjustment pane 1. Access the OMU II Home window and click on RF Adjustment.
Figure 3-16: OMU II Main window 2. The following pane appears.
MBF-20 remote with selected bands to adjust
3. Select the bands of each remote to be adjusted (e.g. 1900MHz band on Node #3) 4. Adjust the following for each band: o o
Nominal Level (dBm) Uplink Delta (dB)
5. Click Adjust. The procedure may take several minutes depending on the number of units selected.
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4 Setup and Commissioning of Remote Fibre-Fed Units This chapter describes how to setup and commission the remote fiber-unit from the OMU II side.
4.1 Overview Remote Setup Overview 1. It is assumed that the remote unit is already installed. 2. Verify RF signals at OMU (DL and UL). 3. Perform OLA on each link – section 3.7. 4. Setup RF configuration on the remote
4.2 Connect to Remote Connection to the remote requires connecting to the OMU, via RMC or via the Web-GUI. . For initial Web-GUI connection procedure see section 3.1. 1. Click on the Nodes button. 2. Click on Control next to the remote you wish to configure.
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PRODUCT DESCRIPTION AND USER’S MANUAL An example of a fibre-fed remote configuration screen is given below. Refer to the corresponding remote unit User Manual for detailed instructions on the configuration procedure.
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5 Administration 5.1 User Accounts The OMU II comes pre-configured with default usernames and passwords in the various administration levels. At the moment, updating user accounts is available only via Command Line Interface (CLI) or Axell Shell. See the Common Commands and Attributes v2.0.0 document for detailed commands and syntax or click on the Help button at the top right of the Web-GUI screen.
5.1.1 Default User Accounts User Name
Default Password
Details
axell
AxellPasswd
Default user name.
omcuname
iwnkhoob
Axell Element Manager user account. This account will not generate VLI, LGO or CLR alarms.
sysadmin
AxellAdmin4050
This is the system administration password which is used for firmware upgrades and user administration. Escalation to this level is achieved by issuing command SYSADMIN from the user prompt.
useradmin
UseradminPwd23
This account contains user administration privileges. Escalation to this level is achieved by issuing command USERADMIN from the user prompt.
Note: It is strongly recommended to change the default user names and passwords immediately at commissioning. This is done by using the command ACT PASSWORD. Please refer to the User Administration section in Common Commands and Attributes document for detailed syntax, or view the Attribute Reference in section 5.4.
5.1.2 User Access Levels In this generation of the system, standard users can be promoted to login via the Web Interface, inheriting the Read-Write or Read-Only access to this interface. There are five different access levels: Access Level
Default User Levels
Read-Only
axell, omcuname, useradmin, sysadmin
Read-Write
axell, omcuname, useradmin, sysadmin
Web
axell
User Administrator
omcuname, useradmin, sysadmin
System Administrator
omcuname, sysadmin
Note: New users added to the system have read-only access.
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PRODUCT DESCRIPTION AND USER’S MANUAL Users may be promoted to read-write and/or web access using the ACT USERPROMOTE command. See Common Commands and Attributes document for details on promoting users, or view the Attribute Reference in section 5.4. Note: Users omcuname, sysadmin and useradmin cannot be promoted to Web Access due to security reasons.
5.1.3 Change Password To prevent unauthorized access, it is highly recommended to change the default password of the user. NOTE: Note that you can only change the password for the User Name with which the session was accessed. To change the Password 1. In the Main menu, click the Config button. 2. Click on Change Password. 3. For the current User Name (e.g. axell): o o
Enter the New password. Repeat the entry.
4. Click Apply.
5.2 Reboot Caution! Use this function in Emergency Cases ONLY!
To reboot the Control Module: 1. Click on the Config tab. 2. Click on the Reboot icon. 3. Approve the Reboot sequence.
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5.3 Axell Shell (Command Line Interface) To access the Axell Shell: 1. Click on the Config button. 2. Select the Axell Shell option.
The Axell Shell button invokes the CLI pane. It is used to run some of the commands that are currently not provided by the Web GUI (user privileges and administration) and/or for advanced troubleshooting and configurations procedures. All configuration and management procedures can be implemented using this interface. Please refer to the Attribute Reference section (by clicking the Cofing button on the top right and selecting Attribute Reference – see ) for detailed syntax and available commands. Additional information may be found in the OMU Commands and Attributes document.
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5.4 Attribute Reference To access the Attribute Reference 1. Click on the Config button. 2. Select the Attribute Reference option.
The Attribute Reference lists all available CLI commands and includes details and examples on how to use the commands. Additional information may be found in the OMU Commands and Attributes document.
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5.5 System Monitoring 5.5.1 Module Status Monitoring Module status is shown under the Home windows once logged in. To view all monitor details click on the Advanced mode view on the top of the screen. Green LED indicators show that the specific function is working properly. An alarm is displayed as a red blinking LED. Module Status Monitors Module
Details o Displays Opto-module and Node alarm status: o Opto Module: o Overall Status – if any one of the following indicators reports an error, the overall status reports an error as well. o Comm. – Communication error with remote. o Firmware – Firmware related error. o Temperature – in Celcius. o Rx Opto – Error with outgoing optical signal. o Rx Opto(dBm) – shows power. o Tx Opto – Error with incoming optical signal. o Pilot Synth pilot signal OK (used in OLA procedures) o Nodes: o Status – General node alarm status. o Comm. – Communication error with remote. o Node Numbers – remote index numbers which are connected to the corresponding Opto module.
Rack Status Monitors Comm Firm
o o o o o o o o
Temp
Voltages
Power Supplies Battery Overall Status
Displays Rack (OMU) alarm status: Comm. – Communication error with remote. Firmware – Firmware error. Temperature – rack internal temperature status Power Voltages 2/3/4 – status of various supply voltages Power Supplies – power supply status Battery – Battery related error (low battery, battery disconnected etc.) Overall Status – indicates overall system status.
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PRODUCT DESCRIPTION AND USER’S MANUAL POI Status Monitors
o o o o o
50
Displays UL Combiner and DL Splitter alarm status: Overall – overall status Comm. – Connection to UL Combiner/ DL Splitter module. Firmware – Firmware related error. Power 3 – status of all three power levels
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5.5.2 Logs The Alarms Log displays the last 100 alarms and/or user actions on the remote system in a chronological order. By hovering with the mouse over each alarm, full alarm details are available, including alarm descriptions, severities, alarm classes and time of event.
Figure 5-1. Logs To receive a summary containing all information on a reported incident in the Log list, simply hover with the mouse over the specified Log and view all details contained in the Log (see below).
Figure 5-2. Logs – Summary Column
Description
Date & Time
Time of occurrence
Source
ID of reporting source
Description
Additional alarm information (e.g Open Door, )
Icon
Description Alarm attended to and cleared. System alarm – displayed when system functionality may be compromised. Alarm status: OK Alarm status: Error Acknowledge alarm – Green = Acknowledged. Click to change acknowledgement. Use the Ack All button to acknowledge all alarm logs.
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5.5.3 SNMP Support The OMU II includes SNMP support, including an SNMP Agent and SNMP traps (alarms) sent to an SNMP Manager / NOC operator. 5.5.3.1 SNMP Traps Parameters The OMU II sends SNMP traps to user defined destination addresses. NOTE: One destination address can currently be defined via the Web. Seven more destination addresses can be defined via the Axell Shell. To configure the SNMP traps destination address 1. Click on the Configure button (top right corner). 2. Select Remote Communication. 3. In the Device:Method field, select ETH:SNMP
4. Define the SNMP trap destination IP address (additional addresses can be defined via the Axell Shell.). 5. Enter the (destination address device) Trap Port and its Community parameters. 6. Click Apply. 5.5.3.2 Activating and Configuring the SNMP Agent The SNMP agent provides inventory management for hosted repeaters (on which the SNMP agent is enabled) and a table of active alarms in the controller or fibre system for remote querying. The SNMP Agent is responsible for responding to queries and carries out requests. The SNMP Agent also provides the proprietary Axell MIB (AXELL-AM-MIB), accessible via any SNMP manager (e.g. HP OpenView). All SNMP queries to the remote are implemented via an OMU session. To allow SNMP agent queries •
To allow SNMP queries of the OMU II – the SNMP agent must be enabled on the OMU II.
•
To allow SNMP queries of the remote devices via OMU II – the SNMP agent must be enabled on the OMU II and on the remote devices.
•
Remote units configured with an IP address and connected to the communication infrastructure, can be queried directly.
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PRODUCT DESCRIPTION AND USER’S MANUAL To activate the OMU II SNMP Agent 1. Click on the Config button (top right corner) and select SNMP Agent Config. The following pane appears:
2. Set the SNMP Agent toggle to ON. 3. Set the port and the Read-Only community. 4. Click Apply.
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6 Troubleshooting 6.1 Troubleshooting Remote Communication Since many networks have their own “personality”, performing first time configuration of the remote communication sometimes requires tweaking of the modem parameters. This section describes some trouble shooting techniques if configuring the OMU for remote access fails.
Radio LinkProtocol (RLP)
Modem
Laptop
RS232 BTS Interworking Function Unit (IFU)
Control Module in OMU
Switch Centre
This illustration is a simplified schematic of the remote communication between a GSM module in an OMU and an analogue modem. The analogue modem in the computer communicates with the Interworking Function Unit (IFU), which is the GSM network analogue network interface. The call is routed via the switch centre over the air interface to the data call number in the SIM-card of the GSM module. The Control Module is responsible for establishing connections with the Axell Element Manager, and to answer incoming calls to the OMU. As described in previous sections, the Control Module only accepts one login at a time, either via Local Maintenance port (LMT) or modem connection. Hence, when verifying the remote access of the OMU, it is important to log out from the OMU locally before trying to access the OMU remotely. 6.1.1.1 Direct Modem Access To allow for advanced trouble shooting of the communications, it is possible to access the modem directly via the Control Module from a laptop computer. LMT Port
RS232 cable
GSM Control Module Module Laptop
Log in to the OMU using the Web-GUI. Switch to Advanced mode and access the Axell Shell dialog. Type in the command ACCESS MODEM .
When typing ACCESS MODEM, the controller will send all the characters that are typed directly out to the modem port. All characters replied back from the modem will go directly to the LMT port and back to the computer.
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PRODUCT DESCRIPTION AND USER’S MANUAL To abort an ACCESS MODEM session, press three ‘-‘ in a row (all three within one second) to come back to the OMU command prompt. Note: When accessing the modem port the modem might be configured with “echo off”, meaning that
the characters entered will not be echoed back to the screen. In order to enable “echo”, press Enter. Type ATE1
(invisible) The modem replies with OK
indicating that the echo is enabled. All characters entered will now be echoed back to the terminal program. Below is a list of handy modem commands for trouble shooting via Direct Modem Access. Please refer to the modem manual for details on the commands below. Command ATE1 ATDT ATA ATH
ATM0 ATM1 AT&W AT&F ATZ
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Description Enables the echo between the modem and the Control Module. Causes the modem to dial . This can be used to verify that the modem correctly can dial a remote modem. Answer incoming call Hang up call. Note, if being online to the remote peer, you need to go to command mode to hang up the call. This is done by waiting at least one second since last entered character, then press +++ (three plus signs), all within one second. After one second, the modem will reply OK, meaning that command mode is entered. Disables the loudspeaker in the modem Enables the loudspeaker in the modem Saves the current modem configuration into NVRAM. This means that this configuration will be used directly after modem power up Loads the modem factory configuration Resets the modem, and loads the default settings as saved with command AT&W
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PRODUCT DESCRIPTION AND USER’S MANUAL 6.1.1.2 Trace Modem For troubleshooting purposes it is possible to trace the actual progress of initializing the modem. This trace is useful when having problems with the modem initialization. Go to Terminal Mode and type TRACE MODEM
To end session type CTRL-Z 6.1.1.3 Manually Answering Incoming Calls It is possible to manually answer incoming calls without involving the OMU software at all, to verify that the remote access and the network itself works as intended. In order to verify the remote communication, make sure to have someone stand by to dial up the OMU with a terminal emulation program, for example HyperTerminal™. Go in to Direct Modem Access as described in 6.1.1.1. When in direct access mode, ask the person standing by to dial up the OMU. As soon as a call is received, the text RING
will repeatedly be displayed on the screen. Type ATA
This will inform the modem to answer (ATtention Answer). When the connection is established, a connect message will be displayed including the connection speed. Sometimes the information comes together with some miscellaneous information, such as error correction protocols etc. Note: Make sure the remote peer dials the Data Call number
If the voice number is dialled instead of the data number, or if the modem contains an illegal modem initialization string, the message OK
or NO CARRIER
will be displayed almost immediately. Try to change the modem initialization string. The modem initialization string mainly used to configure the remote communication is AT+CBST. Successful modem initialization strings used by Axell Wireless include (most common first): AT+CBST=71,0,1;\Q3 AT+CBST=7,0,1;\Q3
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PRODUCT DESCRIPTION AND USER’S MANUAL AT+CBST=0,0,1;\Q3 AT+CBST=0,0,1;\Q3 AT+CBST=7,0,3;\Q3
Once the modem initialization string is entered, try again to dial up the OMU. For details on the different modem initialization strings, please refer to the modem’s user guide. If the setup is successful, the connect message will be brought up; CONNECT 9600
This means that an online connection is established to the remote peer. From now on, all characters typed on the keyboard will end up on the remote peer’s screen. Similarly, all characters typed by the remote peer will be displayed on the screen. In the example, the incoming call was successfully answered, and the remote user entered the text message.
In order to come back to modem command mode, press +++ (three pluses) rapidly (within one second). Receiving OK
means that the modem is back in command mode. Type ATH
This terminates the connection to the remote peer. The message NO CARRIER
will be displayed.
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PRODUCT DESCRIPTION AND USER’S MANUAL 6.1.1.4 Common Problems Problem 1
When enabling the remote access for the OMU, the modem fails to log in to the network. Solution
Signal strength from the donor site is too low. The signal strength can be read directly from the modem. Go in to Direct Modem Access as described earlier. Use the command AT+CSQ (documented below) to read out the signal strength. In order to have good signal quality, Axell Wireless recommends that the signal strength should be better than -95 dBm. If signal strength is lower, try to adjust the antennas to get a better signal strength from the donor.
Documentation of +CSQ command from a modem’s manual.
In the example the reply to AT+CSQ is 0,7 meaning 7*2 dB above -113 dBm; the modem detects a signal level of -99 dBm.
Problem 2a
OMU is configured properly, and answers the incoming call, but when trying to dial the OMU using an analogue mode, no modem handshaking is heard from the dialling modem. Problem 2b
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PRODUCT DESCRIPTION AND USER’S MANUAL When dialling the OMU, the OMU answers the incoming call, but no connection is established, and after a while the OMU disconnects the call. Solution
The most common cause is that the number called is the voice number of the SIM, not the data number. Therefore, make sure to dial the data number. If data call is used, the problem probably is an illegal modem initialization string. In order to change the modem string, go to the OMU command prompt. Try changing the modem initialization string and log out to let the controller reinitialize the modem. If problem remains, try a few different modem initialization strings. Axell Wireless has been successful with the following modem initialization strings: AT+CBST=71,0,1;\Q3 AT+CBST=7,0,1;\Q3 AT+CBST=0,0,1;\Q3 AT+CBST=0,0,1;\Q3 AT+CBST=7,0,3;\Q3
Please refer to the modem manual for detailed description of the modem initialization strings. Problem 3
It is possible to call the OMU from another GSM mobile, but not from an analogue modem. Solution
This problem is most likely related to the modem configuration and/or the configuration of the IFU unit. Try to decrease the communications speed and make sure that the modem error correction is supported by the IFU. Verify the IFU configuration to see if there are any known problems with the modem connections. Problem 4
When dialling the OMU, or when the OMU is dialling the Element Manager, the connection is terminated before the handshaking is completed. Solution
When an OMU is answering an incoming modem call, or calling up the OMC to deliver an alarm or a report, the OMU will wait a configurable number of seconds for the call to be established. If no communication is established within this time, the call will be hung up. If this interval is set too low, the handshaking is terminated too fast. In the RMC, verify the Modem Connect Time to see that it is set to at least 30 seconds.
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6.2 Module LEDs 6.2.1 WDM Module LEDs On the Fibre Optic Converter module there are six LED indicators; one for power status, one for error, two for the data communication and two for the RF signals.
PWR
PWR
Indicates that the power is on
ERR
Indicates that there is something wrong in the module
UL DATA
Ongoing communication in the uplink direction
DL DATA
Ongoing communication in the downlink direction
OPTO Rx
Received signal on fiber channel
OPTO Tx
Transmitted signal on fiber channel
ERR UL DATA DL DATA OPTO Rx OPTO Tx
SC/APC
Fiber link connection LED 1, Power, Green On
Unit is powered on
Off
Unit has no power
LED 2, Error, Red On
Error detected
Off
No error
LED 3, UL Data, Yellow On
Communication via the opto module is ongoing in the uplink direction
Off
No communication
LED 4, DL Data, Yellow On
Communication via the opto module is ongoing in the downlink direction
Off
No communication
LED 5, Opto Rx, Green On
Input opto level OK
Off
Input opto level below threshold
LED 6, Opto Tx, Green On
Output opto level OK
Off
Output opto level below threshold
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6.2.2 Control Module LEDs Modem Status
Status
Login
If the OMU is configured for Ethernet communication the two LEDs Modem Power and Modem Status do not fill any function and can be disregarded.
Modem Power
The Control Module has four LEDs which give information regarding the status of the OMU.
Blue LED - Login Quick flash
Control Module switched on, someone logged in locally and/or remotely
Off (except for a quick flash every 10th second)
Control Module switched on, no one logged in
Off (except for a quick double flash every 10th second)
Control Module switched on, no one logged in and USB interface is supported
Off (permanent)
Control Module switched OFF
Red LED - Status Quick flash
Control Module switched on, one or more errors/alarms detected
Off (except for a quick flash every 10th second)
Control Module switched on, status OK
Off (permanent)
Control Module switched off
Green LED – Modem Power On
Modem Power is on
Off
Modem Power is off
Green LED – Modem Status On
Depending on type of call: Voice call: Connected to remote party Data call: Connected to remote party or exchange of parameters while setting up or disconnecting a call
Flashing
Indicates GPSR data transfer. When a GPRS transfer is in progress the LED goes on within 1 second after data packets were exchanged. Flash duration in approximately 0.5s.
(irregular) 75ms on/75ms off/75ms on/3s off
One or more GPRS contexts activated
75ms on/3s off
Logged to network (monitoring control channels and user interactions). No call in progress
600ms on/600ms off
No SIM card inserted, or no PIN entered, or network search in progress, or ongoing user authentications, or network login in progress
Off
Modem is off
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6.2.3 GSM Modem Behaviour Note: This LED behaviour is valid only for GSM modems. Other modem types will be added in later
editions. Green LED – Modem Status On
Depending on type of call: Voice call: Connected to remote party Data call: Connected to remote party or exchange of parameters while setting up or disconnecting a call
Flashing (irregular)
Indicates GPSR data transfer. When a GPRS transfer is in progress the LED goes on within 1 second after data packets were exchanged. Flash duration in approximately 0.5s.
75ms on/75ms off/75ms on/3s off
One or more GPRS contexts activated
75ms on/3s off
Logged to network (monitoring control channels and user interactions). No call in progress
600ms on/600ms off
No SIM card inserted, or no PIN entered, or network search in progress, or ongoing user authentications, or network login in progress
Off
Modem is off
Verify the remote communication either by having someone attempting to integrate the remote from the Axell Element Manager, or by dialling the remote using the Remote Maintenance Console. Note: It is very important to dial the data number of the SIM. In case the voice number is dialled, the
call is answered, but almost immediately the call will be hung up.
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7 OMU II Configurations OMU II is designed to support a wide range of configurations according to the installed modules. This section provides a few common examples, along with a description of the required modules. The modules illustrated below, are detailed in section 1.6. The combination of modules and the use of POI unit depends on the number of required sectors, connected high-power and/or low-power fibrefed remotes and the desired flexibility. Note that OMU II is model specific to support: •
One sector
•
Two sectors
•
Operation with POI – 1 to 8 sectors and flexible configuration
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7.1 OMU II and MBF-20 Remotes 7.1.1 Single Sector 24 MBF-20 Remotes with POI 7.1.1.1 Installed Modules for Single Sector 24 MBF-20 with POI In this type of configuration, the OMU supports: •
Model supporting POI - The RF splitting and combining is implemented by the POI unit
•
Six WDM Optical Transceivers
•
Six four-way Optical Splitter/Combiners ATTENTION!!: The correct RF level must be verified at the input to the POI!!!
4 way optical splitter/combiners
WDM optical transceivers
PWR
PWR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
PWR
ERR
UL DATA
Modem Status
Login
PWR
ERR
UL DATA
Status
PWR
ERR
Modem Power
PWR
IN
12 13 14 15
OUT 1 OUT 2
Battery Power ON
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
IN/OUT
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
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PRODUCT DESCRIPTION AND USER’S MANUAL 7.1.1.2 Schematic for Single Sector 24 MBF-20 with POI On the DL, a single sector from a BTS is fed via the POI to six Optical Transceivers on the OMU II. The optical signal from each Optical Transceiver is routed to an Optical Splitter where it is split to four and connected to four MBF-20 remotes for a total of 24 (6x4) MBF-20 remotes.
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
WDM
Slot 12 Opto Module
WDM
Slot 11 Opto Module
WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
Slot 6 4 way Opto Splitter/Combiner
Slot 5 4 way Opto Splitter/Combiner
Slot 4 4 way Opto Splitter/Combiner
Slot 3 4 way Opto Splitter/Combiner
Slot 2 4 way Opto Splitter/Combiner
Slot 1 4 way Opto Splitter/Combiner
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7.1.2 Single Sector 24 MBF-20 Remotes with Internal Splitter / Combiner 7.1.2.1 Installed Modules for Single Sector 24 MBF-20 with Internal Splitter / Combiner In this type of configuration, the OMU supports: •
Model with simplex RF input on the rear panel
•
One pair of RF Splitter/Combiner modules with attenuation (via GUI) for the correct input power
•
Six WDM Optical Transceivers
•
Four four-way Optical Splitter/Combiners
•
Additional required equipment: Two external 4-way Optical Splitter/Combiner modules 4 way optical splitter/combiners
PWR
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
DL DATA OPTO Rx
Modem Status
Login
PWR
UL DATA
Status
DL out
Modem Power
UL in
WDM optical transceivers
IN
12 13 14 15
OUT 1
RF out
OUT 2
Battery Power
RF in
ON
IN/OUT
IN/OUT
IN/OUT
IN/OUT
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
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PRODUCT DESCRIPTION AND USER’S MANUAL 7.1.2.2 Schematic for Single Sector x24 with level adjust (24 MBF-20) On the DL, a single sector from a BTS is fed via the OMU II rear panel to the RF Splitter, that distributes the signal between six Optical Transceivers on the OMU II. The optical signal from each Optical Transceiver is routed to an Optical Splitter (two of which are installed external to the OMU II), where it is split to four and connected to four MBF-20 remotes for a total of 24 (6x4) MBF-20 remotes.
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
RF → Optical WDM
To external 4 way Opto Splitter/Combiner
Slot 12 Opto Module
WDM
To external 4 way Opto Splitter/Combiner
Slot 11 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
Slot 6 4 way Opto Splitter/Combiner
Slot 5 4 way Opto Splitter/Combiner
Slot 4 Downlink Splitter
Slot 3 Uplink Combiner
dB
Alternative TX Input Slot 2 Downlink Splitter
TX Input 1 Sector 1
dB
Alternative RX Output Slot 1 Uplink Combiner
RX Output 1
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.1.3 Dual Sector 24 MBF-20 Remotes with Internal Splitter / Combiners 7.1.3.1 Installed Modules for Dual Sector 24 MBF-20 with Internal Splitters / Combiners In this type of configuration, the OMU supports: •
Model with two pairs of simplex RF inputs on the rear panel
•
Two pairs of RF Splitter/Combiner modules with attenuation (via GUI) for the correct input power – each pair of splitter/combiner modules interfaces between a single sector and three specific optical transceiver modules
•
Six WDM Optical Transceivers: three (slots 7 to 9) allocated to Sector 1; three (slots 10 to 12) allocated to Sector 2
•
Two four-way Optical Splitter/Combiners
•
Additional required equipment: Four external 4-way Optical Splitter/Combiner modules Two Sector 1 Sector 2 optical splitters
PWR
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
DL DATA OPTO Rx
Modem Status
DL out
Login
UL in
Status
DL out
Sector 2 Modem Power
UL in
Sector 1
IN
12 13 14 15
OUT 1
RF out
RF in
RF out
OUT 2
Battery Power
RF in
ON
IN/OUT
IN/OUT
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
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PRODUCT DESCRIPTION AND USER’S MANUAL 7.1.3.2 Schematic for Dual Sector 24-MBF-20 with Level Adjust On the DL, two sectors from two RF sources are fed via the OMU II rear panel to each RF Splitter. Each RF splitter distributes the signal between three Optical Transceivers on the OMU II. The optical signal from each Optical Transceiver is routed to an Optical Splitter (four of which are installed external to the OMU II), where it is split to four and connected to four MBF-20 remotes for a total of 24 (6x4) MBF-20 remotes.
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
RF → Optical WDM
To external 4 way Opto Splitter/Combiner
Slot 12 Opto Module
WDM
To external 4 way Opto Splitter/Combiner
Slot 11 Opto Module
WDM
To external 4 way Opto Splitter/Combiner
Slot 10 Opto Module
WDM
To external 4 way Opto Splitter/Combiner
Slot 9 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
RF ← Optical
RF → Optical RF ← Optical
Slot 6 4 way Opto Splitter/Combiner
Slot 5 4 way Opto Splitter/Combiner
dB 50Ω
Alternative TX Input Slot 4 Downlink Splitter
50Ω 50Ω
TX Input 1 dB
Sector 2 50Ω
Alternative RX Output Slot 3 Uplink Combiner
50Ω 50Ω
RX Output 1 dB 50Ω
Alternative TX Input Slot 2 Downlink Splitter
50Ω 50Ω
TX Input 1 Sector 1
dB 50Ω 50Ω
Alternative RX Output Slot 1 Uplink Combiner
50Ω
RX Output 1
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.2 OMU I Replacement 7.2.1 OMU I Replacement – Single Sector, Six High Power Remotes WDM optical transceivers
RF Combiner/Splitter
PWR
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
DL DATA OPTO Rx
Modem Status
Login
PWR
UL DATA
Status
DL out
Modem Power
UL in
IN
12 13 14 15
OUT 1
RF out
OUT 2
Battery Power
RF in
ON
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.2.2 OMU II – schematic for OMU I replacement to support 1 Sector x 6 FO
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
Slot 12
Slot 11
RF → Optical WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
WDM
Slot 6 Opto Module
WDM
Slot 5 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
Slot 4
Slot 3
dB
Alternative TX Input Slot 2 Downlink Splitter
TX Input 1 Sector 1
dB
Alternative RX Output Slot 1 Uplink Combiner
RX Output 1
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.3 Single Sector – Eight High Power Remotes This configuration supports: •
One sector via a two Combiner/Splitter pairs – provide internal attenuation
•
Eight high-power fibre-fed remotes (MBF-40 or BSF-3604)
7.3.1 Physical Configuration This configuration allows for internal attenuation adjustment.
WDM optical transceivers Sector 1
Combiner/Splitter
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
OPTO Rx
Modem Status
DL out
Login
UL in
Status
DL out
Modem Power
UL in
IN
12 13 14 15 OUT 1
RF out
RF in
RF in
OUT 2
Battery Power
RF in
ON
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
Note: Additional 2 way splitters fitted in rear of chassis. Terminate unused ports of splitters.
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.3.2 Schematic
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
RF → Optical WDM
Slot 12 Opto Module
WDM
Slot 11 Opto Module
WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
WDM
Slot 6 Opto Module
WDM
Slot 5 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
dB
Alternative TX Input Slot 4 Downlink Splitter
50Ω 50Ω
dB
Alternative RX Output Slot 3 Uplink Combiner
50Ω 50Ω
dB
Alternative TX Input Slot 2 Downlink Splitter
50Ω 50Ω
TX Input 1 Sector 1
dB
50Ω
Alternative RX Output Slot 1 Uplink Combiner
50Ω
RX Output 1
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.4 Two-Sectors – Eight High Power Remotes Split Evenly per Sector This configuration supports: •
Two sectors via two Combiner/Splitter pairs – provide internal attenuation
•
Eight high-power fibre-fed remotes (MBF-40 or BSF-3604) – four per sector
7.4.1 Physical Configuration Optical transceivers Sector 1
Comb/Split Comb/Split Sect-1 Sect-2
PWR
PWR
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
PWR
Modem Status
DL out
Login
UL in
Status
DL out
Modem Power
UL in
Optical transceivers Sector 2
IN
12 13 14 15 OUT 1
RF out
RF in
RF out
OUT 2
Battery Power
RF in
ON
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
Note:
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.4.2 Schematic
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
RF → Optical WDM
Slot 12 Opto Module
WDM
Slot 11 Opto Module
WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
WDM
Slot 6 Opto Module
WDM
Slot 5 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
dB
Alternative TX Input Slot 4 Downlink Splitter
50Ω 50Ω
TX Input 1 dB
Sector 2
Alternative RX Output Slot 3 Uplink Combiner
50Ω 50Ω
RX Output 1 dB
Alternative TX Input Slot 2 Downlink Splitter
50Ω 50Ω
TX Input 1 Sector 1
dB
50Ω
Alternative RX Output Slot 1 Uplink Combiner
50Ω
RX Output 1
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AXELL OPTICAL MASTER UNIT MARK II
PRODUCT DESCRIPTION AND USER’S MANUAL
7.5 Two-Sectors – Eight High Power Remotes Split Unevenly Between Sectors This configuration supports: •
Two sectors via two Combiner/Splitter pairs – provide internal attenuation
•
Eight high-power fibre-fed remotes (MBF-40 or BSF-3604) – six to Sector 1 and two to Sector 2
7.5.1 Physical Configuration Two pairs of Combiners/Splitters
PWR
PWR
PWR
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
DL DATA OPTO Rx
Modem Status
DL out
Login
UL in
Status
DL out
Modem Power
UL in
Sector-2
Sector-1
IN
12 13 14 15 OUT 1
RF out
RF in
RF out
OUT 2
Battery Power
RF in
ON
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
Note: Terminate unused ports of splitters with load 1510000140
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.5.2 Schematic
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
RF → Optical WDM
Slot 12 Opto Module
WDM
Slot 11 Opto Module
WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
WDM
Slot 6 Opto Module
WDM
Slot 5 Opto Module
RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
RF → Optical RF ← Optical
dB
Alternative TX Input
50Ω 50Ω
Slot 4 Downlink Splitter
50Ω 50Ω
TX Input 2 dB
Sector 2
Alternative RX Output
50Ω 50Ω
Slot 3 Uplink Combiner
50Ω 50Ω
RX Output 2 dB
Alternative TX Input Slot 2 Downlink Splitter
TX Input 1 Sector 1
dB
Alternative RX Output Slot 1 Uplink Combiner
RX Output 1
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.6 OMU II USA Solutions – with External POI These configurations are implemented with a Point of Interface Unit (POI). Up to eight sectors can be implemented and these can be allocated to any of the WDM modules according to user configuration.
7.6.1 POI Single Sector –8 MBF-40 Remotes 7.6.1.1 Physical Configuration WDM optical transceivers
PWR
PWR
PWR
PWR
PWR
ERR
ERR
ERR
ERR
ERR
ERR
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
UL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
DL DATA
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Rx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
OPTO Tx
PWR
PWR ERR
1 2 3 4 5 6
UL DATA DL DATA LinkOK
7 8 9 10 11
LMT Port
UL DATA
Modem Status
Login
PWR
ERR
Status
PWR
ERR
Modem Power
PWR
IN
12 13 14 15 OUT 1 OUT 2
Battery Power ON
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
SC/APC
OFF
Ethernet 10/100
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PRODUCT DESCRIPTION AND USER’S MANUAL 7.6.1.2 Schematic
PSU Module
PSU Module
Slot 16 RCB
Slot 15 Controller
Slot 14 External Alarm & Battery
Slot 13 Modem (Optional)
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
TX Input
RF → Optical
RX Output
RF ← Optical
WDM
Slot 12 Opto Module
WDM
Slot 11 Opto Module
WDM
Slot 10 Opto Module
WDM
Slot 9 Opto Module
WDM
Slot 8 Opto Module
WDM
Slot 7 Opto Module
WDM
Slot 6 Opto Module
WDM
Slot 5 Opto Module
Slot 4
Slot 3
Slot 2
Slot 1
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AXELL OPTICAL MASTER UNIT MARK II
PRODUCT DESCRIPTION AND USER’S MANUAL
Output Splitters to OMU
Downlink Outputs to OMU
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
Input Combiners from OMU
Uplink Inputs from OMU
7.6.2 OMU II USA POI Solutions
700
0-15 dB
700-1 Simplex RX U/L O/P
Cellular
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
0-15 dB
D/L Monitor Port
C-1
700/C
Simplex RX U/L O/P
P
A Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
PCS
0-15 dB
U/L Monitor Port
700/C
P
P-1 Simplex RX U/L O/P
A
AWS
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
0-15 dB
A-1 Simplex RX U/L O/P
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PRODUCT DESCRIPTION AND USER’S MANUAL
7.6.3 External POI for OMU II with 8 MBF-40 Remotes in a single sector S/
S te ace
700-2
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
p e / up e up e e s
Co b
g/Sp tt g
O U
te ace
0-15 dB
700-2 Simplex RX U/L O/P
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
700-1
0-15 dB
U/L Monitor Port
700-1 Simplex RX U/L O/P
Output Splitters to OMU
Cellular
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
0-15 dB
Downlink Outputs to OMU
D/L Monitor Port
D/L Monitor Port
C-1
700/C
Simplex RX U/L O/P
P
A Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
PCS
0-15 dB
U/L Monitor Port
700/C
P
P-1 Simplex RX U/L O/P
AWS
Duplex TX/RX D/L I/P & U/L O/P SimplexTX D/L Input
0-15 dB
Input Combiners from OMU
A-1 Simplex RX U/L O/P
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Uplink Inputs from OMU
A
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8 Maintenance 8.1 General The system normally operates without any operator intervention or maintenance. Should the system malfunction, the condition of the antenna systems as well as the continuity of the cabling should be checked before replacing any of the OMU units. In the unlikely event of a unit failure, the field replaceable components (antenna unit, cables, etc.) should be checked and replaced if faulty and the system restored. A failed unit can be removed and replaced with a spare while the rest of the system (other OMUs) is still in operation. This product is equipped with Class 1 lasers, as per definition in EN 60825-1.
Caution: Class 1 Laser
Caution!!! Un-terminated optical receptacles may emit laser radiation. Do not stare into beam or view with optical instruments.
Note: The power supply of the failed OMU should be isolated from AC mains and DC power before
any module is replaced.
8.2 Preventive Maintenance The OMU does not require any preventative maintenance apart from changing the battery every three years. Caution! Risk of explosion if battery is replaced by an incorrect type. Dispose of used batteries according to local laws and instructions.
8.3 Product Disposal Disposal of this product must be handled according to all national laws and regulations.
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Appendix A - Specifications RF Parameters Frequency bands Gain flatness Nominal RF input power Absolute maximum RF input power Number of optical modules Number of optical remote units List of the various high (MBF40) and low (MBF-20) power remote unit configurations and number of supported links. E.g., if the OMU II supports two high power fibre remotes, then the available low power links = 20
68-500 / 380-2700 MHz typical 2 dB (p-p) +10 dBm composite power +23 dBm composite power 1-8 (depends on low / high power configuration) 1-24 (depends on low / high power configuration) MBF-40/BSF-36 (high power) 8 7 6 5 4 3 2 1 0 Class 1
MBF-20 (low power) 0 4 8 12 16 16 20 20 24
Laser class Optical Wavelength Downlink (± 10 nm) 1310 or 1330 Uplink (± 3 nm) 1510 or 1530 or 1550 or 1570 or 1590 Optical Output power Opto Module +5 ± 2 dBm Opto Splitter (SCC) +5 ± 2 dBm Maximum Optical Input Power +5 dBm Output Power (Tx) max +7 dBm Operating Temperature +41 to 113° F (+5 to +45°C) Automatic fibre optic loss Yes compensation Power Requirements Power Requirements 230/115 VAC, 50/60 Hz, 24/-48 VDC Power Consumption Typical 50 W (fully equipped) External electrical interfaces Local Maintenance Terminal RS232 RF Ports N-type Connector Female Optical Ports SC/APC AC/DC Mains Input AC: IEC Connector. DC: Terminal Block External alarms Via Front panel Modem connector RJ45 or RJ11 Modem antenna connector SMA Ethernet connector RJ45 Mechanical specifications Dimensions (w x h x d) 17.5 x 5.2 x 11.4 in (444 x 132.5 x 291 mm) 19” rack Weight 33 lbs. (15 kg) (fully equipped) IP rating IP20 Reliability specification Lifetime (MTBF) >70000 hrs.
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PRODUCT DESCRIPTION AND USER’S MANUAL
Appendix B – Connections with Duplex Filter OMU with Duplex Filter The following two alternatives are available: Alternative 1 The OMU and the wireless modem operate on the same band (e.g. an OMU providing GSM with a GSM modem). In this case, insert the modem module and connect the ANT port with the coupler port to enable this option.
Modem ANT
Coupler
Alternative 2 The OMU and the wireless modem operate on different bands (e.g. an OMU providing TETRA with a GSM modem). In this case connect an external antenna as if no duplex filter is installed. Modem ANT
To external antenna
Coupler
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PRODUCT DESCRIPTION AND USER’S MANUAL
Appendix C - F/O Cleaning Procedure NOTE: The process is demonstrated on an OMU F/O module and is similar to all F/O equipment supplied by Axell. Tools: Tool Description
Illustration
Fibrescope connected to a PC running the appropriate viewing software. It is highly recommended that some form of fibre viewing equipment such as a Fibrescope is used to ensure that all fibre connections are clean before termination; failure to do so could result in poor system performance Lint-free swabs (box), Axell P/N 99-000127
Lint-free wipes (pack) Axell P/N 99-000125
Fujikura “One Click” cleaner, Axell P/N 98-900004.
99% isopropyl alcohol (can), Axell P/N 99-000126
Cletop type S Cassette Cleaner, Axell P/N 98-900001
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PRODUCT DESCRIPTION AND USER’S MANUAL
Cleaning Procedure Dry Cleaning ATTENTION!
Invisible laser radiation might be emitted from disconnected fibres or connectors. Do not stare into beams or view directly with optical instruments.
1. Before cleaning the optical connectors on the OMU it is advisable to clean the connector of the mating cable being attached to the optical port. An unclean optical connector is often the cause for reduced system performance. A bit of dust or oil from a finger can easily interfere with, or block light. Fortunately, it is very easy to clean the connector. Be sure to use the correct procedure for the given connector. When disconnected, cap the SC/APC connector to keep it clean and prevent scratching the tip of the ferrule.
Use a product specially designed for the purpose, such as the Cletop type S Cassette Cleaner.
2. Begin by dry cleaning the F/O bulkhead connector (shown below is the Fujikura One-Click in use).
IMPORTANT
Always make sure there is a way of inspecting the connector after cleaning. Cleaning can actually leave the end-face in a worse condition, since alcohol residue is one of the most difficult contaminants to remove.
3. Remove the protective cap from the cleaning-head end of the “One Click” cleaner, lift the protective end-cap on the fibre connector and offer-up the end to the fibre connector
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PRODUCT DESCRIPTION AND USER’S MANUAL 4. With the cleaning-head end fully engaged in the connector, push until an audible “click” is heard 5. Without fully withdrawing the cleaning head end push it in again twice more, each time until an audible “click” is heard. 6. Withdraw the “One Click” cleaner and replace the protective end cap. 7. Inspect the fibre connector using a Fibrescope. On the PC monitor, verify that there is no contamination present on the connector end-face. 8. If the connector is dirty, clean it with a wet cleaning technique followed immediately by dry cleaning. This is to remove any remaining residue from the wet clean (the following steps demonstrate a wet cleaning technique).
© Axell Wireless Ltd
Doc PN 00018UM Rev. 1.9
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PRODUCT DESCRIPTION AND USER’S MANUAL
Wet Cleaning
ATTENTION!
Invisible laser radiation might be emitted from disconnected fibers or connectors. Do not stare into beams or view directly with optical instruments.
1. Lightly moisten a new lint-free wipe with 99% isopropyl alcohol. (Step 1 below). Tip: Have a dry lint-free swab available for immediately drying after performing the wet-cleaning. 2. Lightly press and turn a clean lint-free swab in the moistened area of the wipe to moisten the swab. It is important that the swab is not too wet. (Step 2 below). 3. Insert the moistened lint-free swab into the bulkhead adapter. Lightly press and rotate several times in the same direction. (Step 3 below). Step 1
Step 2
Step 3
Wet-Cleaning Technique 4. Immediately use a dry lint-free swab to clear any remaining alcohol residue.
NOTE: Do not re-use any of the wipes and/or swabs. Dispose of them properly.
5. Follow steps 3 to 6 of Dry Cleaning above 6. Re-inspect the fibre using the Fibrescope. On the PC monitor, verify that there is no contamination present on the connector end-face. 7. If the fibre is still dirty, go back to step 1 (Wet Cleaning) and repeat the entire process.
NOTE: The entire wet/dry cleaning cycle should only be used twice, if the fibre is still dirty after two cycles of wet/dry cleaning seek advice from the Axell Wireless Support Desk.
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